Talking-machine.



C. E. WOODS.

TALKING MACHINE.

APPLICATION FILED NOV.30,1912

1 1 08,30 1 at nted Aug. 25, 19M

5] wuc n toz of nniy'er 'l sound-con vc or or UNITED STATES PATENT OFFICE.

CLINTON'E WOODS. 0F BRIDGEPORT, CONNECTICUT, ASSIGNOR TO AMERICAN GRAPHOPHONE COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF WEST VIRGINIA.

Specification of Letters Patent.

TALKING-MACHINE.

v Application'filed November- 30, 1912. Serial No. 734,236.

'cut, have invented a new and useful Improvementin TalkingMaehines, which in vention isflful'ly set. forth in the following specification. in e My 'inveri ion relates to the sound-conveyer employed in tallring machines for connecting the's ound-boxlwith the amplifying horn. This conveyer isifreqiient-ly referred to in the art as a, tone-arm.

One object of the invention is to-produce a tonearm that is correctly designed, from an acoustical point ofzw ijew, and with a con- Another production offs tone arm whi'e freefrjomwbratmn and the parts, yet capable A further object is the production oi? 2 tnndirdiid tone-arm,-that is, one which can befused o q uel a'dtfantage oh a visible in timeibeing simple and OnStructiQn nnd attractive in appearance." f

The'inizention will understood by reference to the accompanying drawings. in whichi Figure 1 is :1 side view of a portion of the so-called, tone-arm or sonnd-convcyer.

mounted for use ivith a concealed horn talking -m achine so -called. showing. the mounting therefor in "ertical section: Fig. 2 is anend' VlCW of'thc same, looking from the right o't'liig. l, and partly in section; Fig. 3 is :1 plzin View of Fifi. i partly in horizontal section; Fig. -lis a side view showing the tone-arm in connection with a visible horn machine; and Fig. I; is a sectional View showing details.

Referrin to'Figs. l3. '1 represent the stationary member. shown as a vcrl'i -al who adapted to be secured upon the sin-Ion shelf of the cehinet (or upon the on. of the taihi gmaehiney to conunnnn ai with the Si er end of the u ua stats horn contained v the cabinet {hut not sh wn). lar intermerl,

Pf "a3" concealed horn fma--* cured. as by screws l8,.upon"the .'-in=.'l-l'mx%hrough theftone ariihthe lnt 1 inmmtc elhon'. and the stationary them upper end of the same. (5 is" anhoriz'ontal slot in the reduced portion' t, and 7 a setscrew carried by the stationary member and entering said slot to limittheltgxizil' 'moye ment of the elbow, and also-'serving'to pre- "vent withdrawal thereof. "StiSZthe- 'sWing ing soiind-conyeyer o'i"ton'e arm', havingthe proper taper, and carrying at its outer end any suitablesound-box (not shown); and at its inner end curved (in a horizontal plane) to resent the elbow 9.- This elbow 9 swi'v'e ed to the intermediate elbow 3 Patented g. 2 5, 19:14.. I

the reduced portion .4; the bore of thestnti'ontiry member 1, and- .having the shoulder firesting upon the so as to swing in a vertici l ph nqso' tlizit by reason of this joint and the s ivelingof the intermediate member in the stationarymember 1, the sound-box can have universal" "movement. I n More p cally, the tonerarmfandflm 3 termediate member a re (let'achabl edby a breech-lock or bay n'etj' mt con: I

pling, which lO-l.0 represent "an rupted radial flange carried by th'e rediiced" cylindrical portioiull of the constitute the male member-{and}?! 4 7L is the interrupted internal flange car l the elbow-member 3 to providenn annular-Z,

groove, thus constituting the femal'e nieinher for receiving the uiterrupter'l-flangeI150.

The endface of the reduced portion 11 is cut away at 13, to receive the tapered pin H whi h projects vfrom the I set-sore 1:: carried by the intermediate memh" Diametrically opposite this cu't air' a similar cutawny 16-, for the pii'r described later. 5

17 is a thin ring of springma lt of the reduced portion ll; content with, and adapted to hear-uponthe tepereii stop-pin 14, to preventany loosene and consequent rattle.

By ltu'r'n'i the set screw 15 in or out, the tensio'ned engagem" t" ens a li'l uni n lerruptcd passageway omes};

(of fastening-device sr the r 7 nection; and the consequent absence of rattle,

the present construction permits dispensing with the soft-rubber insulation heretofore con mgmly employed in connectin the sound box" to the "tone-arm. Indeed the sound-box may be made integral with, or secured directly and rigidly to, the end of the tone-arms r Referring now to Fig. 4, 20 represents the supporting-bracket commonly employed in visible horn -;machines, to which any suit- .able horn 21 i's secured in any convenient.

usual manned Thesame intermediate elbow 3 has, however, been; turned upside down, and its reduced portion 4 isjournaled within the bracket, so that the elbow itself depends therefrom. The set-screw 15 has been retracted, so as to permit the tone-arm 8 to be swung through axiangle of 180 in order to bring 'the 'sound-box and its stylus into proper position; and the set-screw 15 has thenvbeen restored to place, engaging with the second cut-away 16. In short, by means of the present invention the tone-arms and the' intermediate elbows are standardized and canbe put in stock, ready for use as desired, either upon the concealed born machines or upon the fvisible horn machines, which greatly simplifies and cheapens manufacturmg-operations. And, in

I either service, the-structure is of the greatest etiiciency. t

I have thus described my invention with considerable-detail, but only for the sake of lear esg ince my invention is not limited to the deta ls o f,--constrnct1on and arrangement aboveiset forth, batgmay be modified considerably without departing, from the spirit of theinvention. For instance, the male and female coupling-members might be mutually transposed, or. some other iormi'of coupling employed; the anti-rattling spring 17 might be dispensed with al together, .or some other anti-rattler employed; and other changes made without departing from the broad invention.

Having thus described my invention, I claim:

1. In a tone-arm for talking machines, avertical member ha mg a horizontally extending elbow,.-a horizontal member having a horizontally extending elbow, a bayonet-1 joint connection between said horizontally extending members, and a spring mounted I on one of said members and reacting against the other, the tendency of said spring being to force said members apart 0 2-. In a tonearm for talking'machincs, the combination of a vertical member having a horizontally extending elbow and a horizontal member ha ving a corresponding horizontally extending elbow, one of said elbow members having interiorly formedbayoneb joint elements and the other elbow member having corresponding bayonet-joint n1em-' bers on the reduced end thereof, and a spring mounted on said reduced end and bearing against the other member.

3. In a tone-arm for talking machine, the

combination'of a vertical member having a horizontally extending elbow and a horizon tal member having a corresponding horizontally ext-ending elbow, one of said elbow members having .int-eriorly formed bayonetjoii t elements and the; otherelbow member having corresponding bayonet-joint mem bers on the reduced endthereof, a spring mounted on said ,reduced'end and bearing against the other member, and means for adjusting the tension of said spring.

In testimony whereof I have signed this specification in the presence of two subscrib- Y CLINTON E. WOODS. Witnesses:

JOHN R. Pn'rnm,

J on: S. Gnrrrrrn.

' Copies of this patent may be obtalnedftorflve cents each, by addressing the Commissioner M litants, i

i r 1 wnh1nzton,D.C." 

